Oheistiak



Patented Get. 4, 1881.Y

(No Model.)

C. ABELE. MILLFOB GRINDING GRAIN. No. 247,870.

vri/vtm.-

R mammography, washington. DA c.

a f MW, 2H n W mM www m IUNITED STATES PATENT OFFICE.

CHRISTIAN ABELE, NEW YORK, N. Y.

MILL FoRfeRiNolNe GRAW.

SPECIFICATION forming part rof Letters Patent No. 247,870, dated October4, 1881.

l l Application tiledDecember 14,1880. (No model.)

To all whom it mag/concern: j Beit known that I, CHRISTIAN ABELE, of ofthe city, county, and State ot' New York, have invented new and usefulImprovements in Mills for Grinding Gra-in, of which the following is aspecification.

This invention pertains to certain improve- Inents in mills for grindinggrain' and other articles, and which belong to a class known as portablemills, or those4 in which the grind-I ing apparatus is mounted in aframe-one for each millso as to be in a compact form, and which, as anentire or completely organized apparatus, may he moved from place toplace as desired.

The invention consists in certain combinations and arrangements ofdevices, which devices will be iullyexplained in the specification, andwill appear as forming the subjectmatter of the claims.

In the drawings, Figure l rem'esents asectional elevation ot' the mill.Fig'. 2 is a detailed view'of the device for supporting the shoe. Fig. 3is aplan of the mill as seen from above the hopper.

At A is represented the main frame for tupporting the entire apparatus,and at B is a supplemental frame, which is hinged to the upper side ot'the main frame'hy stronghinges, (shown at C.)

The runner or revolving stone is shown at D, and the stationary stone isrepresented at E, and is mounted in a circumferential metal hoop orband, (shown at F,) and which is formed with lugs cast upon its outerand upper corners, three of which are shown in the drawings at F', andsaid lugs are ofsufticient strength to support the stone ina verticalposition upon the supplemental frame, which is hinged to the main frame;and through- ,said

.lugs are arranged setscrews, as shown at G,

provided with regulating-nuts, so that thestationary stone may be raisedorlowered at pleasure, and to any degree desired, either for the purposeof adjusting the tone` in the proper position or for the purpose ot'compensating for any wear that may take place on its sur.

face; but-in addition to said regulatingnuts and supporting-screws thereare also bindingscrews, as at H, projecting inwardlyT from oppositesides of said supplemental frame, the ends of which projectin againstthe perimeter of the stone, so thatwhen it is once adjusted in` positionby the vertical screws the said setscrews will be set up iirmly againstit for the purpose ot' holding it in a xed position. By such aconstruction ofthe parts, or the means vof supporting the stationarystone, it is evident that it may be adjusted and lfastened in itssupporting-frame in any desired and fixed position, and so held thatwhen any dressing of the stone is required it is only necessary toremove the hopper from above the stationaryr stone, and then with anordinary pulley-block lift the stone and its frame up and turn it backupon the hinges which connect said supplemental t'rame with the ,maini'rame, so that the stone may be turned face upward, and at the Asainetime expose the face ofthe runner or lower stone; and after the dressingof the stone is completed the said supplemental'fraie with its suspendedstone may be again 44turned back into position, and, the adjustment nothaving been disturbed, will be ready at once to proceed with theoperation of grinding, as no further adjustment will be required thansimply to close the frame.

The lower stone is mounted in thc usual manner on a spindle, as at K,the lower end otl which is supported in a step, as at L, said step.being supported in a step box or ,casting which is mounted upon across-beam, as at M,

`that-extends across from one side ofthe frame to the other.

The step-box is shown at N, and is held by keys extending throughnotches in the said cross-beam M, so that it may be moved to and -fro inany direction required for adjusting the step or lower end of thespindle; but the lower end'ot' the spindle itself rests upon plates ofmetal held in' recesses in a supplemental box, as at O, the lower end ofwhich rests upon a lever, as at P, which extends across from a beamforming a portion ofthe main frame underneath said step-box, and islsupported. at its other end by means ot a regulating rod and screw, asatR and R. The upper end of said regulating-rod is supported in abracket, as at R2, fastened upon the uppery face of the supplementalfra-me, and said bracket is notched, so that the rod may be raised upand placed into said notched end, and thereby readily moved in and outof position; but when in position the hub of the hand-wheelR3 will keepsaid rod from dropping ont of the bracket, as

the hub works in a circularrecess in the bracket vtionary stone, whichrestsfnpon the hinged or supplemental frame, may be drawn or forcedtoward each other by means ot' said regulatingrod, and with as great aldegree of power as can be exerted on the hand or regulating wheel.

The step-box of the spindle is provided with plates at the bottom, asshown at O, for the spindle to rest upon, and instead of the side ot'the spindle bearing 'against the box itself there is a sleeve or bushingof steel, as at S, inserted inside of said box, which works sufeientlyloose to serve as a bearing for the spindle, so that if the friction isgreatest between it and the spindle, said sleeve will turn in the box,or vice versa, as the case may be.

The hopper is represented at T, and underneath it is suspended a shoe,as at T', one end being supported by a pivot or finger, as at T2, andthe other end supported by a cord, as at T3, one end of which is woundaround a regulating-shaft, and upon said regulating-shaftisaratchet-wheel and pawl, as at T4 and T", but around the sameregulating-shaft there is another cord, as at V, which extends around apivot or small pulley, as at W", and which is connected to a spring, asat W2, one end of which is attached, so that a-s the shoe is raised orlowered the ltension on said spring will be varied accordingly, andconsequently when the shoe is lowered to a very considerable position,and the cord at T3 would therebybe of considerable length, and the shoewould haveatendency to swing over from the knocker-statf, the tension onthe spring T2 would be increased, as its cord would be wound up at thesame time that the cord supporting the shoe would be nnwonnd, and inthis way the pressure on the knocker-staft' would be kept substantiallythe saine in whatever position the shoe may be adjusted.

Above the bush that surrounds the upper end of the spindle there is acollar-plate, as at X, which has a boss or a flange upon its upper i'aeeextending entirely around the spindle, and over said flange the hub ofthe sweepstaff, as at Y, fits in such a manner as to prevent any grainor meal from falling down around the spindle into the bush, as theconcave portion of the said hub at Y fits down snugly over the flangedportion ot' the collar above the bush, and thus effectnally covers theparts around the spindle.

In a mill so constructed it is evident that if the parts be so combinedthat when the stones are separated they may be again brought togetherwithout disturbing their previous adjustments, there will be greatadvantages gained in the grinding ot' articles when the stones must beseparated frequently and the faces cleaned and sharpened, as in thegrinding ot' herbs or other materials beside grain.

I therefore claiml. In a portable mill, the combination of the xed orstationary stone E, provided with the circumferential hoop or band F,having lugs F' and set-screws Gr, supplemental frame B, for supportingthe iixed stone, hinged at one side to the main frame, and provided atthe opposite side with an open slotted bracket, R2, regulatingscrew RR', and handwheel R", for holding the stone in place, as hereinbeforeshown and described.

2. In combination with the shoe ot a grinding-mill, the regulating-shaftW4, suspended above the lower end of shoe, cord T3, connect-r ing shoewith regulating-shaft, and spring W2, attached at one end to shoe and atthe other through medium of cord W to regulatingshaft, whereby, byturning the regulatingshaft, the shoe through cord T3 is raised, andthrough cord W is drawn against the knoclrershaft, and thus the properposition of the shoe is maintained.

3. In a portable mill, the combination, with the frame B, hinged at oneside to the main frame, ofthe open or slotted bracket R2, secured to thehinged frame, and provided with a slotted or open front portion and acircular groove within its top, hand-wheel R3, and regulatingrod R R',for the purposes hereinbefore set forth.

In witness whereof I have hereunto subscribed my name in the presence oftwo subloo scribing witnesses.

CHRISTIAN ABELE.

Witnesses EUGENE N. ELIofr, RICHARD J. CARTER.

